I don't like to use the box which was provided for carrying my specs in. So how do I save my lenses from scratches when I am not wearing it, without using a spectacle case?
The best way to keep from scratching is to pay attention how the glasses are laid down. They should not be laid on the lenses of course, but they should also not be laid so they flip over onto the lenses. They should not be laid so they fall on the floor. Paying attention is not as easy as it sounds and can be learned. When cleaning use only soap, warm water, and fingers. Blot with a soft cloth and do not wipe. If glasses become smudged, try and leave the smudge if not too bad until soap and water are available. Glass lenses are easier to care for, but plastic lenses require the care described, especially.